Tesla Model S Plaid Received Performance Tuning

A custom module has pushed the Tesla Model S Plaid to record speeds following an owner's drag racing defeat.

Updated on Oct. 11, 2026 in Performance Vehicles

Tesla Model S Plaid Received Performance Tuning

Live Poll

Should the government place tighter regulations on consumer software modifications for electric vehicles?

Owner Brooks Weisblat installed a SirHarrold tuning module into his Tesla Model S Plaid, achieving a top speed of 198.47 miles per hour. The modification followed a disappointing race result in June 2026 that spurred the owner to seek increased power.

Why it matters

This performance upgrade demonstrates how independent tuning software can bypass factory limitations to significantly enhance the acceleration and velocity of electric vehicles. The modification provides a glimpse into the growing secondary market for EV performance enhancements.

The tuned Tesla Model S Plaid reached a quarter-mile time of 9.24 seconds at 153.44 mph and a half-mile time of 14.57 seconds at 185.78 mph. The vehicle's peak power output reached 1,200 hp, bolstered by a software-enabled scramble button.

The players

Brooks Weisblat

He is a vehicle enthusiast who documents performance testing and modifications for his Tesla Model S Plaid.

SirHarrold

This company manufactures specialized aftermarket tuning modules designed to increase the power output of electric vehicles.

The details

The tuning module connects to a factory port beneath the center console, allowing users to adjust performance parameters through a mobile app. The setup includes an all-wheel drive burnout mode and a scramble button that provides a 10 percent power boost for up to 60 seconds.

Brooks Weisblat lost a drag race in his stock vehicle in June 2026.
The vehicle performance tests were conducted in October 2026.

Roadmap

This modification signals a shift in the automotive enthusiast sector as software-defined vehicles become the primary focus for aftermarket performance tuners. It positions boutique hardware developers as direct challengers to original equipment manufacturers regarding peak performance capabilities.

Drivers considering these performance upgrades should evaluate the risk of voiding their factory warranty or creating mechanical strain on the vehicle's electric motor. Additionally, installing custom software and modules requires access to factory ports and compatibility with specific vehicle firmware versions.

The takeaway

Performance tuning for electric vehicles is evolving rapidly through plug-and-play software solutions. Owners should prioritize safety and warranty considerations before modifying sophisticated electronic power systems.